[go: up one dir, main page]

EP1818151A1 - Rotatory reversible milling tool - Google Patents

Rotatory reversible milling tool Download PDF

Info

Publication number
EP1818151A1
EP1818151A1 EP06075952A EP06075952A EP1818151A1 EP 1818151 A1 EP1818151 A1 EP 1818151A1 EP 06075952 A EP06075952 A EP 06075952A EP 06075952 A EP06075952 A EP 06075952A EP 1818151 A1 EP1818151 A1 EP 1818151A1
Authority
EP
European Patent Office
Prior art keywords
cutter blade
tooth
teeth
blade according
face
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06075952A
Other languages
German (de)
French (fr)
Inventor
Adrianus Gerardus Van Houten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Blastrac BV
Original Assignee
Blastrac BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Blastrac BV filed Critical Blastrac BV
Priority to US11/701,093 priority Critical patent/US20070201958A1/en
Publication of EP1818151A1 publication Critical patent/EP1818151A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B23C5/04—Plain cutters, i.e. having essentially a cylindrical or tapered cutting surface of substantial length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00—Cutter blocks; Other rotary cutting tools
    • B27G13/08—Cutter blocks; Other rotary cutting tools in the shape of disc-like members; Wood-milling cutters
    • B27G13/10—Securing the cutters, e.g. by clamping collars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/10—Measures preventing splintering of sawn portions of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/181—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools using cutters loosely mounted on a turning tool support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/186—Tools therefor, e.g. having exchangeable cutter bits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2210/00—Details of milling cutters
    • B23C2210/72—Rotatable in both directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2226/00—Materials of tools or workpieces not comprising a metal
    • B23C2226/75—Stone, rock or concrete
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1946—Face or end mill

Definitions

  • the invention relates to a cutter blade adapted to be arranged in a milling drum of a milling machine, the cutter blade having an annular body, and peripheral teeth arranged at the annular body, the teeth having a tooth face and a clearance face which intersect at a cutting edge.
  • EP 1 300 226 Al is in Fig. 3 shown a cutter blade for arrangement in a milling drum.
  • the known cutter blade has peripheral teeth, which each have a tooth face and a clearance face which intersect at the cutting edge. All tooth faces of the known cutter blade are directed in one direction.
  • the invention has for an object to provide a more versatile cutter blade.
  • a cutter blade according to the preamble of claim 1, wherein the teeth are alternately arranged such that the tooth face of one tooth is oriented in one tangential direction and the tooth face of a neigbouring tooth is oriented in an opposite tangential direction.
  • JP 8284392 is shown an example of a rotary milling machine with a milling drum.
  • the milling drum typically comprises a rotary shaft and a plurality of carrying rods that are arranged at the periphery of the drum and are extending parallel to the shaft.
  • the cutter blades are arranged freely rotatable on the carrying rods. Upon rotation of the drum the cutter blades engage with their teeth the surface to be treated.
  • a milling drum with cutting blades according to the invention can advantageously be used to remove flexible layers or harder coatings from e.g. concrete surfaces and provides a better and relatively smooth milling result, due to the two-way cutting action possibility of the cutter blades.
  • Fig. 4 is shown a milling drum 1 of a milling machine.
  • the milling drum 1 has two side plates 2 with a circular disc shape.
  • the side plates 2 of the drum 1 are interconnected by carrying rods 3.
  • cutter blades 4 On the carrying rods 3 are arranged cutter blades 4, such that the cutter blades 4 are freely rotatable with respect to the carrying rods 3.
  • spacer rings 5 On the carrying rods 3, between the cutter blades 4, are arranged spacer rings 5.
  • the side plates 2 are provided with a central opening 6 through which a rotational driving shaft (not shown) can be inserted, which shaft is designed to bring the drum in a rotational movement and can have round or polygonal cross sectional shape.
  • the driving shaft can be driven by a motor via a gear, a belt or another transmission means.
  • Figs. 1-3 the cutter blade 4 is illustrated in more detail.
  • the cutter blade 4 has an annular body 7 with a centre hole 12 through which in a mounted state of the cutter blade 4 the carrying rod 3 passes. On the annular body 7 are arranged peripheral teeth 8.
  • the teeth 8 have a tooth face 9 and a clearance face 10 which intersect at a cutting edge 11. Furthermore the teeth 8 have a rear face 13.
  • the teeth 8 have a tooth height h , which is the distance between the cutting edge 11 and the foot of the tooth 8.
  • the clearance face has a clearance angle ⁇ .
  • the cutter blade is preferably entirely made from hardmetal, more preferably from Tungsten Carbide. It would also be possible to make only the teeth from hard metal and the annular body from a less hard material, although this would complicate the fabrication of the cutter blade.
  • the teeth 8 are arranged in an alternative fashion such that the tooth face 9 of one tooth 8a is oriented in one tangential direction and the tooth face 9 of a neigbouring tooth 8b is oriented in an opposite tangential direction (see Fig. 2).
  • the differently oriented teeth 8a and 8b can have a different shape, e.g. a different clearance angle ⁇ .
  • the tooth faces 9 of the teeth 8 extend perpendicular with respect to the centre axis 18 of the annular body 11, and preferably the tooth face 9 of each tooth 8 lies in a imaginary plane which extends radially through the centre axis 18 of the annular body 7 (cf. Fig. 2).
  • Figs. 1-3 the teeth 8 are arranged in pairs.
  • a pair is indicated by reference numeral 14.
  • the teeth 8a, 8b of a single pair 14 are are separated by a V-shaped groove 15 and the walls of the groove 15 are constituting the respective rear faces 13 of the teeth 8a, 8b.
  • the teeth 8 of which the tooth faces 9 are oriented towards eachother are separated by a flute 16 with a slightly concavely rounded bottom surface 17.
  • the cutter blade 4 may have an outer diameter D of for example between 45 and 50 mm, preferably 47 mm.
  • the ratio between the outer diameter D of the blade and the thickness t of the blade may be about 3 and the thickness t can be for example 15 mm.
  • the tooth height h is for example around 4 mm.
  • the tangential distance l between two cutting edges 11 of two facing teeth 8 is around 10 mm.
  • the clearance angle ⁇ can be 15° for the teeth 8a oriented in one tangential direction and 20° for the teeth 8b oriented in the other tangential direction.
  • the cutter blade 4 of the example has seven tooth pairs combined with the outer diameter D of 47 mm.
  • the cutter blade 4 according to the invention is able to cut in two directions. If all teeth on the cutter blade are exactly the same this would mean that it does not matter in what direction the milling drum 1 is rotated. If the teeth 8a are differently shaped from the teeth 8b a different milling effect can be achieved by reversing the rotation direction of the miling drum 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Food Science & Technology (AREA)
  • Milling Processes (AREA)

Abstract

The invention provides a cutter blade (4) adapted to be arranged in a milling drum (1) of a milling machine. The cutter blade (4) has an annular body (7), and peripheral teeth (8) arranged at the annular body (7). The teeth (8) have a tooth face (9) and a clearance face (10) which intersect at a cutting edge (11). The teeth (8) are alternately arranged such that the tooth face (9) of one tooth (8a) is oriented in one tangential direction and the tooth face (9) of a neigbouring tooth (8b) is oriented in an opposite tangential direction. Thus a more versatile cutter blade is provided.

Description

  • The invention relates to a cutter blade adapted to be arranged in a milling drum of a milling machine, the cutter blade having an annular body, and peripheral teeth arranged at the annular body, the teeth having a tooth face and a clearance face which intersect at a cutting edge.
  • In EP 1 300 226 Al is in Fig. 3 shown a cutter blade for arrangement in a milling drum. The known cutter blade has peripheral teeth, which each have a tooth face and a clearance face which intersect at the cutting edge. All tooth faces of the known cutter blade are directed in one direction.
  • The invention has for an object to provide a more versatile cutter blade.
  • This object is achieved by a cutter blade according to the preamble of claim 1, wherein the teeth are alternately arranged such that the tooth face of one tooth is oriented in one tangential direction and the tooth face of a neigbouring tooth is oriented in an opposite tangential direction.
  • In JP 8284392 is shown an example of a rotary milling machine with a milling drum. The milling drum typically comprises a rotary shaft and a plurality of carrying rods that are arranged at the periphery of the drum and are extending parallel to the shaft. The cutter blades are arranged freely rotatable on the carrying rods. Upon rotation of the drum the cutter blades engage with their teeth the surface to be treated.
  • Use of a milling drum with cutting blades according to the invention can advantageously be used to remove flexible layers or harder coatings from e.g. concrete surfaces and provides a better and relatively smooth milling result, due to the two-way cutting action possibility of the cutter blades.
  • Preferred embodiments of the invention are described in the dependent claims 2-11.
  • The invention will be described in more detail in the following with reference to the accompanying drawing, in which:
    • Fig. 1 shows a perspective view of a preferred embodiment of a cutter blade according to the invention,
    • Fig. 2 shows a side elevational view of the cutter blade of Fig. 1,
    • Fig. 3 shows a top elevational view of the cutter blade according to Fig. 1, and
    • Fig. 4 shows a top elevational view of a milling drum of a milling machine.
  • In Fig. 4 is shown a milling drum 1 of a milling machine. The milling drum 1 has two side plates 2 with a circular disc shape. The side plates 2 of the drum 1 are interconnected by carrying rods 3. On the carrying rods 3 are arranged cutter blades 4, such that the cutter blades 4 are freely rotatable with respect to the carrying rods 3. Also on the carrying rods 3, between the cutter blades 4, are arranged spacer rings 5. The side plates 2 are provided with a central opening 6 through which a rotational driving shaft (not shown) can be inserted, which shaft is designed to bring the drum in a rotational movement and can have round or polygonal cross sectional shape. The driving shaft can be driven by a motor via a gear, a belt or another transmission means.
  • In Figs. 1-3 the cutter blade 4 is illustrated in more detail.
  • The cutter blade 4 has an annular body 7 with a centre hole 12 through which in a mounted state of the cutter blade 4 the carrying rod 3 passes. On the annular body 7 are arranged peripheral teeth 8.
  • The teeth 8 have a tooth face 9 and a clearance face 10 which intersect at a cutting edge 11. Furthermore the teeth 8 have a rear face 13. The teeth 8 have a tooth height h, which is the distance between the cutting edge 11 and the foot of the tooth 8. The clearance face has a clearance angle α.
  • The cutter blade is preferably entirely made from hardmetal, more preferably from Tungsten Carbide. It would also be possible to make only the teeth from hard metal and the annular body from a less hard material, although this would complicate the fabrication of the cutter blade.
  • The teeth 8 are arranged in an altenate fashion such that the tooth face 9 of one tooth 8a is oriented in one tangential direction and the tooth face 9 of a neigbouring tooth 8b is oriented in an opposite tangential direction (see Fig. 2). The differently oriented teeth 8a and 8b can have a different shape, e.g. a different clearance angle α.
  • In the preferred embodiment shown in Figs. 1-3 the tooth faces 9 of the teeth 8 extend perpendicular with respect to the centre axis 18 of the annular body 11, and preferably the tooth face 9 of each tooth 8 lies in a imaginary plane which extends radially through the centre axis 18 of the annular body 7 (cf. Fig. 2).
  • In the preferred embodiment shown in Figs. 1-3 the teeth 8 are arranged in pairs. In Fig. 2 a pair is indicated by reference numeral 14. The teeth 8a, 8b of a single pair 14 are are separated by a V-shaped groove 15 and the walls of the groove 15 are constituting the respective rear faces 13 of the teeth 8a, 8b.
  • The teeth 8 of which the tooth faces 9 are oriented towards eachother are separated by a flute 16 with a slightly concavely rounded bottom surface 17.
  • To give an indication of the dimensions of a practically usable cutter blade by way of non limiting example: The cutter blade 4 may have an outer diameter D of for example between 45 and 50 mm, preferably 47 mm. The ratio between the outer diameter D of the blade and the thickness t of the blade may be about 3 and the thickness t can be for example 15 mm. The tooth height h is for example around 4 mm. The tangential distance l between two cutting edges 11 of two facing teeth 8 is around 10 mm. The clearance angle α can be 15° for the teeth 8a oriented in one tangential direction and 20° for the teeth 8b oriented in the other tangential direction. The cutter blade 4 of the example has seven tooth pairs combined with the outer diameter D of 47 mm.
  • The cutter blade 4 according to the invention is able to cut in two directions. If all teeth on the cutter blade are exactly the same this would mean that it does not matter in what direction the milling drum 1 is rotated. If the teeth 8a are differently shaped from the teeth 8b a different milling effect can be achieved by reversing the rotation direction of the miling drum 1.
  • It is to be understood that the given dimensions are for indicative purposes only. The cutter blade may well have other dimensions, as long as the mutual proportions are such that the cutter blade can remain to perform its function.

Claims (11)

  1. Cutter blade (4) adapted to be arranged in a milling drum (1) of a milling machine, the cutter blade (4) having an annular body (7), and peripheral teeth (8) arranged at the annular body (7), the teeth (8) having a tooth face (9) and a clearance face (10) which intersect at a cutting edge (11), characterized in that the teeth (8) are alternately arranged such that the tooth face (9) of one tooth (8a) is oriented in one tangential direction and the tooth face (9) of a neigbouring tooth (8b) is oriented in an opposite tangential direction.
  2. Cutter blade according to claim 1, wherein the tooth faces (9) of the teeth (8) are extending perpendicular with respect to the centre axis (18) of the annular body (7).
  3. Cutter blade according to claim 1 or 2, wherein the tooth face (9) of each tooth (8) lies in a imaginary plane which extends radially through the centre axis (18) of the annular body (7).
  4. Cutter blade according to any of the preceding claims, wherein the teeth (8) are arranged in pairs (14), which teeth (8) of such a pair (14) are oriented to each other with respective rear faces (13).
  5. Cutter blade according to claim 4, wherein the teeth (8) of a pair (14) are separated by a groove (15).
  6. Cutter blade according to claim 5, wherein the groove (15) is V-shaped.
  7. Cutter blade according to any of the preceding claims, wherein the teeth (8) of which the tooth faces (9) are oriented towards eachother are separated by a flute (16) with a rounded bottom (17).
  8. Cutter blade according to any of the preceding claims, wherein the ratio between the outer diameter (D) of the blade (4) and the thickness (t) of the blade (4) is about 3.
  9. Cutter blade according to any of the preceding claims, wherein the ratio between the outer diameter (D) and the tooth height (h) is within the range of from 10 to 12.
  10. Cutter blade according to any of the preceding claims, wherein the blade (4) has seven tooth pairs (14) combined with an outer diameter (D) of the blade (4) within the range of from 45mm to 50mm.
  11. Cutter blade according to any of the preceding claims, wherein the cutter blade (4) is made from hardmetal, preferably Tungsten Carbide.
EP06075952A 2006-02-08 2006-04-25 Rotatory reversible milling tool Withdrawn EP1818151A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/701,093 US20070201958A1 (en) 2006-02-08 2007-02-01 Cutter blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06075279 2006-02-08

Publications (1)

Publication Number Publication Date
EP1818151A1 true EP1818151A1 (en) 2007-08-15

Family

ID=36637749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06075952A Withdrawn EP1818151A1 (en) 2006-02-08 2006-04-25 Rotatory reversible milling tool

Country Status (2)

Country Link
US (1) US20070201958A1 (en)
EP (1) EP1818151A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102744791A (en) * 2012-07-11 2012-10-24 北京珠峰天宫玉石科技发展有限公司 Cutter for machining two sides of building stone slab

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8769786B1 (en) * 2009-03-24 2014-07-08 Honda Motor Co., Ltd. Trim and flame robot end effector with optional automatic blade change feature
US9352396B2 (en) 2013-03-05 2016-05-31 Oberg Industries Lathe for machining a workpiece and related methods and toolholders
DE102014008645B4 (en) * 2014-06-13 2018-07-19 Audi Ag face milling
US10710089B2 (en) * 2014-09-11 2020-07-14 Henry Johnson System and method for the comminution and harvesting of trees and brush type vegetation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1524999A1 (en) * 1988-03-23 1989-11-30 Львовский Лесотехнический Институт Wood cutter
US4991986A (en) * 1988-06-03 1991-02-12 Asea Brown Boveri Ltd. Milling cutter having face and peripheral cutting edges
EP0512275A2 (en) * 1991-05-08 1992-11-11 Hans Hundegger Rotary milling tool
FR2723016A1 (en) * 1994-07-26 1996-02-02 Itb Sarl Two=way rotary cutting tool

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2381540A (en) * 1943-10-09 1945-08-07 Aber Engineering Works Inc Side milling cutter
US4697963A (en) * 1985-02-08 1987-10-06 Ingersoll Cutting Tool Company Insert clamping device and insert therefor
US5201353A (en) * 1991-07-25 1993-04-13 Weill Theodore C Reconfigurable debarker head
US20040057803A1 (en) * 2002-01-08 2004-03-25 Walrath Richard J. Rotary metal cutting tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1524999A1 (en) * 1988-03-23 1989-11-30 Львовский Лесотехнический Институт Wood cutter
US4991986A (en) * 1988-06-03 1991-02-12 Asea Brown Boveri Ltd. Milling cutter having face and peripheral cutting edges
EP0512275A2 (en) * 1991-05-08 1992-11-11 Hans Hundegger Rotary milling tool
FR2723016A1 (en) * 1994-07-26 1996-02-02 Itb Sarl Two=way rotary cutting tool

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section PQ Week 199037, Derwent World Patents Index; Class P63, AN 1990-280925, XP002390228 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102744791A (en) * 2012-07-11 2012-10-24 北京珠峰天宫玉石科技发展有限公司 Cutter for machining two sides of building stone slab

Also Published As

Publication number Publication date
US20070201958A1 (en) 2007-08-30

Similar Documents

Publication Publication Date Title
CN101326026B (en) Sine Angle Rotary Cutting Tool
KR101978078B1 (en) Double-sided cutting insert and milling tool
JP6128997B2 (en) Milling insert
EP2125275B1 (en) End mill
TWI513528B (en) Embedded tool
JP2015500150A (en) Cutting inserts and cutting tools
CN104395024A (en) Rotary cutting tool and reversible cutting insert therefor
CN106041208B (en) Circular saw blade with grouped teeth
US20070266841A1 (en) Circular Cutting Apparatus
US20070201958A1 (en) Cutter blade
EP3680049A1 (en) Circular saw blades
JP6412272B2 (en) Rotating cutting tool having a predetermined number of left-handed and right-handed spiral grooves and end face cutting blades
EP1896185B1 (en) Comminution plant
JP2013022727A (en) Cutting insert especially for tooth cutter
US3831484A (en) Lobed rotary cutting blade
JP5853586B2 (en) End mill
JP6560566B2 (en) Cutting insert and gear milling cutter
EP1679152A1 (en) Grinding wheel
US9481042B2 (en) Ring-shaped tool for processing a work piece
WO2006099607A2 (en) Saw blade
JP2011056608A (en) Square end mill
JP2006026853A (en) Gear chamfering milling cutter
KR100337655B1 (en) Diamond blade having segment type cutting tip
RU2004101704A (en) ROUND CUTTING SAW
JP2649015B2 (en) Drill

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20071031

17Q First examination report despatched

Effective date: 20080121

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20091031